Ask
your own question, for FREE!
Mathematics
30 Online
OpenStudy (anonymous):
factorise x^3-x^2-5x-3=o
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
i usually attempt this type of question by trial and error. Usually my choice of guess is range from -3 to 3. Since, using x=3 is one of the factor, it help reduce the equation to this form; x^2 + 2x +1. you can solve the above equation using quadratic formula; x^3-x^2-5x-3 = (x-3)(x^2 + 2x + 1) = (x-3)(x-1)^2
OpenStudy (anonymous):
to find a root you could use newton's method: x(n+1) = x(n) - f(x(n))/f'(x(n)) if you have a ti calculator try this: 2->x enter x - (x^3-x^2-5x-3)/(3x^2-2x-5) -> x enter (5 times) you should see it approach 3. This is a good way if you can't really think of a root but have a calculator. Then proceed by division as kenius describes.
OpenStudy (anonymous):
where "->" is the "sto>" button
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Cloud4444:
Heu2019s not talking to me BUT also not blocking me, Whatu2019s the verdict peopl
1 hour ago
63 Replies
2 Medals
Bounty:
so its just you and me in this so called reality man I'm broken cant even show em
21 minutes ago
13 Replies
5 Medals
Breathless:
Do I have a problem if I can't. Feel the spark? or like. the thing that makes me happy? what if like smth is makes me happy but doesn't stay like that?.
1 hour ago
22 Replies
3 Medals
Bluehorizon19:
Pain has been around for awhile, Always held within a file. peace never existed nor felt real, When they gave you hate you could never heal.
4 hours ago
7 Replies
4 Medals
DeathSinger:
For him. u2764 Lost, Thats what they called me That's who I was until you found me, you pulled me out when I was drowning and now my life will never ever be
5 hours ago
30 Replies
1 Medal
Astrid1:
Just wanna post some vids of the stuffies practicing for the air showww ( maybe I
7 hours ago
4 Replies
1 Medal